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Re: [PSUBS-MAILIST] Motor speed controlers
Speaking of 36 volts, I have been noticing that the
options for controllers and motors for the OSS project
would expand quite a bit if we went with 36 or 48
volts, as would the run time.
Warren.
--- atozed@juno.com wrote:
> Hi Dan H,
>
> For a few horsepower or more, you can't go wrong
> with a Curtis controller
> - back to eBay, about $100 gets you 36 volts and 275
> amps. A Curtis model
> 1505 is about half that.
> Once again I encourage all to use "off the shelf"
> stuff.
>
> -Peter Korwin
>
> On Sun, 5 Dec 2004 10:42:40 -0500 "Dan H."
> <jmachine@adelphia.net>
> writes:
> > Warren,
> > I was born in the year of...... well let's just
> say, a long time
> > ago, and I know I'm not a monkey either. I have
> what it took to build
> > "Persistence" and have some old electronic
> experience also, but still
> wouldn't
> > know how to build the speed controller you're
> talking about.
> >
> > Please keep in mind, we're not all from the same
> mold. It would be
> > more useful to me, and probably many others on the
> list, if your
> postings
> > did more describing and less assuming. For
> instance, I know your
> > planning a sub, that's obvious, but I still don't
> know the exact
> meaning of
> > OSS. I do happen to know what a 555 timer is but
> how many others do,
> I'm not
> > sure. I also know what caps are. They are used
> to smooth out
> electrical
> > pulses, used to block off the ends of pipes, and
> what I used to put in
> my
> > hand gun when I donned my cowboy hat and ran
> around the back yard many
> years
> > back. I know I'm exaggerating here but only
> trying to make a point.
> >
> > You are a skilled person and I know I can learn
> things from you.
> > Please try
> > to post in full descriptions without assumptions
> and use terms
> > instead of "
> > alphabet soup," at least the first few times you
> post about
> > something so we
> > can get up to speed.
> >
> > About a speed controller, I for one would be
> grateful if you'd draw
> > up
> > schematics for a few that the average guy can
> build and post them,
> > in
> > particular, one for 36volts @ 100 amps for forward
> and reverse..
> >
> > Sorry if I sound mentally challenged to you.
> > Dan H.
> > ----- Original Message -----
> > From: "Rick and Marcia" <empiricus@telus.net>
> > To: <personal_submersibles@psubs.org>
> > Sent: Sunday, December 05, 2004 3:19 AM
> > Subject: Re: [PSUBS-MAILIST] [Fwd: take some time
> and view my web
> > sites...]
> >
> >
> > > Warren - I was born in the year of the monkey
> (per your remark
> > below) but
> > I
> > > still have some questions!!!
> > >
> > > If I read your email correctly, it's possible to
> build a motor
> > speed
> > control
> > > for under $10.
> > >
> > > I have a joy stick (USB compatible) that I'm
> thinking of hooking
> > up
> > > mechanically to some pots for static maneuvering
> (sidle, pitch,
> > yaw,
> > heave).
> > > Would I be able to use the USB function without
> having to rely on
> > software?
> > > Or am I better off to just cut the USB cord and
> go with my
> > original idea
> > of
> > > a mechanical connection?
> > >
> > > Why the 555 timer? Caps? FET? PWM? Vas ist?
> > >
> > > I'm thinking of using simple 12V bilge pumps to
> generate water
> > jets for
> > > static thrust but they're simple on/off's.
> Variable speed
> > controls on the
> > > pumps would be nice if it's simple enough to do.
> > >
> > > Circuit diagrams?
> > >
> > > Rick Lucertini
> > > Vancouver, Canada
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Warren Greenway"
> <opensourcesub@yahoo.com>
> > >
> > > Subject: Re: [PSUBS-MAILIST] [Fwd: take some
> time and view my web
> > sites...]
> > >
> > >
> > > > Thanks for some real good feedback. I would
> like to
> > > > point out, though, that by fly-by-wire I meant
> using
> > > > the electric drive motors directly. If it is
> > > > all-electric then you can upgrade from
> switches to PWM
> > > > via potentiometer, to digital, as you see fit
> or can
> > > > afford. For instance, you can use a simple 555
> timer
> > > > IC with a potentiometer a couple of caps and a
> FET and
> > > > get a PWM with dial-a-speed ability for under
> $10.
> > > > Cheap upgrade, reliable, can be built by a
> monkey, but
> > > > it has to be all-electric for this to be
> viable. So,
> > > > that is all I meant.
> > >
> > >
> > >
> > >
> > >
> >
>
************************************************************************
> > >
> >
>
************************************************************************
> > >
> >
>
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=== message truncated ===
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